If you have Battlefield 1942, you've played the Back to Karkand maps then, it is just revamped maps of Battlefield 1942's maps that everybody liked.
Close Quarters, if you think you'd like close quartered maps, go for it.

I would buy BTK, because of 1 map, Wake Island.

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Based on your map preferences, I also suggest Close Quarters, as it has very high paced room-to-room clearing action. Might be a little tough at first when you're trying to understand and memorize the map layout and spawn areas Ziba Tower is probably the most fun to play on I've noticed almost all players playing on CQ are high leveled Colonels however, and we all have Premium xD

I only play BtK to troll people as the maps are absolutely huge and everyone vehicle whores the entire game. IMO, Gulf of Oman is the best map, with Wake Island at a close second. I hate Sharqi Peninsula and Strike at Karkand however.

If you do want both map packs, I might as well suggest you get premium and save yourself some extra cash if you become interested in the next 3 DLC map packs that are coming out.

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Thanks for all the replies guys and girls. I never knew picking between two DLCs would be so hard! But at this moment, I'm going to go for Close Quarters. But probably won't get it just yet If anyone has recorded themselves playing on either, it'd be nice to see it from your points of view

Get close quarters. B2K is pretty much dead. whenever i go into server browser and search by B2K maps like Sharqi Peninsula, there isn't a single dam server with it playing. Pretty much Gulf Of Oman is all people put in their severs now.